diff --git a/IPython/extensions/cythonmagic.py b/IPython/extensions/cythonmagic.py
index f184a39..4c1d121 100644
--- a/IPython/extensions/cythonmagic.py
+++ b/IPython/extensions/cythonmagic.py
@@ -147,7 +147,7 @@ class CythonMagics(Magics):
              "multiple times)."
     )
     @magic_arguments.argument(
-        '-n', '--name', action='append', default=[],
+        '-n', '--name',
         help="Specify a name for the Cython module."
     )
     @magic_arguments.argument(
@@ -209,7 +209,7 @@ class CythonMagics(Magics):
             key += time.time(),
 
         if args.name:
-            module_name = str(args.name[0])
+            module_name = str(args.name)
         else:
             module_name = "_cython_magic_" + hashlib.md5(str(key).encode('utf-8')).hexdigest()
         module_path = os.path.join(lib_dir, module_name + self.so_ext)
diff --git a/IPython/extensions/tests/test_cythonmagic.py b/IPython/extensions/tests/test_cythonmagic.py
index 36685e5..41dea38 100644
--- a/IPython/extensions/tests/test_cythonmagic.py
+++ b/IPython/extensions/tests/test_cythonmagic.py
@@ -50,6 +50,14 @@ def test_cython():
     nt.assert_equal(ip.user_ns['g'], 20.0)
 
 
+def test_cython_name():
+    # The Cython module named 'mymodule' defines the function f.
+    ip.run_cell_magic('cython', '--name=mymodule', code)
+    # This module can now be imported in the interactive namespace.
+    ip.ex('import mymodule; g = mymodule.f(10)')
+    nt.assert_equal(ip.user_ns['g'], 20.0)
+
+
 @dec.skip_win32
 def test_extlibs():
     code = py3compat.str_to_unicode("""